Read carefully before installation, commissioning and operation

Temperature Difference Controller

TDC 1 Installation and operating instructions

TDC 1Temperature-Difference-Controller

ContentA.1 EC declaration of conformity 3A.2 General instructions 3A.3 Explanation of symbols 3A.4 Changes to the unit 4A.5 Warranty and liability 4

B.1 Specifi cations 5B.2 About the controller 6B.3 Scope of supply 6B.4 Disposal and pollutants 6B.5 Hydraulic variants 7

C.1 Wall installation 8C.2 Electrical connection 9C.3 Installing the temperature sensors 10

D Terminal connection diagrams 11

E.1 Display and Input 17E.2 Parametrisation 18E.3 Free commissioning 18E.4 Menu sequence and menu structure 19

1. Measurement values 20

2. Statistics 212.1 Operating hours 212.2 Average temperature difference ∆T 212.3 Heat output 212.4 Graphic overview 212.5 Message log 212.6 Reset / clear 21

3. Display mode 223.1 Schematic 223.2 Overview 223.3 Alternating 223.4 Eco Mode 22

4. Operating modes 234.1 Automatic 234.2 Manual 234.3 Off 23

5. Settings 245.1 Tmin S1 245.2 Tmax S2 245.3 ΔT 255.4 Tref 255.5 Tref Th2 265.6 Thermostat times 265.7 Thermostat 2 times 265.8 Party Funktion 275.9 Energy saving mode 275.10 TecoS3 275.11 Tmax S3 285.12 Hysteresis 28

6. Protective functions 296.1 Seizing protection 296.2 Frost protection (solar only) 296.3 System protection 306.4 Collector protection 306.4.1 Cooling 316.5 Col.- Alarm 316.6 Recooling (solar only) 326.7 Anti-Legionella 32

7. Special functions 337.1 Program selections 337.2 Time and Date 337.3 Sensor calibration 337.4 Commissioning 347.5 Factory settings 347.6 Expansions 347.7 Heat quantity 347.7.1 Heat metering 347.7.2 AF type 357.7.3 Glycol portion 357.7.4 Flow rate 357.7.4 ΔT Offset 357.8 Start help function (solar only) 35

8. Menu lock 36

9. Service values 37

10. Language 38

Z.1 Malfunctions with error messages 39Z.2 Replacing the fuse 40Z.3. Maintenance 41

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Safety instructions

Danger

Caution

A.1 EC declaration of conformityBy affi xing the CE mark to the unit the manufacturer declares that the Temperature-Difference-Controller TDC 1, herein after referred to as TDC 1, conforms to the follow-ing relevant safety regulations:- EC low voltage directive 73/23/EEC, as amended by 93/68/EEC- EC electromagnetic compatibility directive 89/336/EEC version 92/31/EEC version 93/68/EECConformity has been verifi ed and the corresponding documentation andthe EC declaration of conformity are kept on fi le by the manufacturer.

A.2 General instructionsThese installation and operating instructions contain basic instructions and important information regarding safety, installation, commissioning, maintenance and the optimal use of the unit. Therefore these instructions must be read completely and understood by the installation technician/specialist and by the system user before installation, com-missioning and operation of the unit.The valid accident prevention regulations, the regulations of the local power utility, the applicable standards and the installation and operating instruction of the additional system components must also be observed. The controller does not under any circum-stances replace any safety devices to be provided by the customer!Installation, electrical connection, commissioning and maintenance of the unit may only be carried out by specialists who possess the appropriate training. For the user: Make sure that the specialist gives you detailed information on the func-tion and operation of the controller. Always keep these instructions in the vicinity of the controller.

A.3 Explanation of symbols

Failure to observe these instructions can result in danger to lifefrom electric voltage.

Danger

Failure to observe these instructions can result in serious damageto health such as scalding, or even life-threatening injuries.

Caution

Failure to observe these instructions can result in destruction ofthe unit or the system, or damage to the environment.

Information which is especially important for the function andoptimal use of the unit and the system.

It is essential that you read this!

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A.4 Changes to the unit

A.5 Warranty and liabilityThe controller has been manufactured and tested with regard to high qualityand safety requirements. The unit is subject to the statutory guarantee periodof two years from the date of sale.The warranty and liability shall not include, however, any injury to persons ormaterial damage that is attributable to one or more of the following causes:

- Failure to observe these installation and operating instructions- Improper installation, commissioning, maintenance and operation- Improperly executed repairs- Unauthorised structural changes to the unit- Installation of additional components that have not been tested together with

the unit- Any damage resulting from continued use of the unit despite an obvious defect- Failure to use original spare parts and accessories- Use of the device for other than its intended purpose- Operation above or below the limit values listed in the specifi cations- Force majeure

- Changes, additions to or conversion of the unit are not permitted without the written permission from the manufacturer - It is likewise forbidden to install additional components that have not been tested together with the unit - If it becomes clear that safe operation of the unit is no longer possible, for example because of damage to the housing, then turn the controller off immediately - Any parts of the unit or accessories that are not in perfect condition must be exchanged immediately - Use only original spare parts and accessories from the manufacturer. - Markings made on the unit at the factory must not be altered, removed or made illegible - Only the settings actually described in these instructions may be made on the controller

Changes to the unit can compromise the safety and function of theunit or the entire system.nit or the entire system.

Safety instructions

Danger

5

B.1 Specifi cations

Electrical specifi cations:Mains voltage 230VAC +/- 10%Mains frequency 50...60HzPower consumption ~ 1.5VASwitched power- mechanic relay output R1 460VA for AC1 / 185W for AC3- mechanic relay output R2 460VA for AC1 / 185W for AC3Internal fuse 2A slow blow 250VProtection category IP40Protection class IISensor inputs 3 x Pt1000Measuring range -40°C - 300°C

Permissible ambient conditions::Ambient temperature- for controller operation 0°C...40°C- for transport/storage 0°C...60°CAir humidity- for controller operation max. 85% rel. humidity at 25°C- for transport/storage no moisture condensation permitted

Other specifi cations and dimensionsHousing design 2-part, ABS plasticInstallation methods Wall installationOverall dimensions 163mm x 110mm x 52mmAperture installationdimensions 157mm x 106mm x 31mmDisplay Fully graphical display, 128 x 64 dotsOperation 4 entry keys

Temperature sensors: (may not be included in the scope of supply)Collector or boiler sensor Pt1000, immersion sensor TT/S2 up to 180°CStorage tank sensor Pt1000, immersion sensor TT/S2 up to 180°CPipe-mounted sensor Pt1000, pipe-mounted sensor TR/S1.5 up to 180°CSensor leads 2x0.75mm² extendable up to 30m max.

Temperature resistance table for Pt1000 sensors °C 0 10 20 30 40 50 60 70 80 90 100Ω 1000 1039 1077 1116 1155 1194 1232 1270 1308 1347 1385

Description of controller

6

B.3 Scope of supply - Temperature Difference Controller TDC 1 - 2 Screws 3,5x35mm, 2 plugs S6 for wall installation - 4 strain relief clips with 8 screws, replacement fuse 2A slow blow - 1 connection clamp for PE terminal block. - Installation and operating instructions TDC 1Optionally contained depending on design/order: - 2-3 Pt1000 temperature sensors and immersion sleevesAdditionally available: - Pt1000 TemperaturSensor, Tauchhülsen, Überspannungsschutz.

B.4 Disposal and pollutantsThe unit conforms to the European RoHS directive 2002/95/EC for the restriction of the use of certain hazardous substances in electrical and electronic equipment.

Caution

The unit must not under any circumstances be disposed of with ordinary household refuse. Dispose of the unit only at appropriate collection points or ship it back to the seller or manufacturer.

B.2 About the controllerThe Temperature Difference Controller TDC 1 facilitates effi cient use and function control of your solar or heating system. The device is impressive most of all for its functionality and simple, almost self-explanatory operation. For each step in the input process the individual entry keys are assigned to appropriate functions and explained. The controller menu contains headwords for the measured values and settings, as well as help texts or clearly-structured graphics.The TDC 1 can be used as a temperature difference controller for the various system variants illustrated and explained under B.5.Important characteristics of the TDC 1:

- Depiction of graphics and texts in a lighted display - Simple viewing of the current measurement values - Analysis and monitoring of the system by means of statistical graphics,etc. - Extensive setting menus with explanations - Menu block can be activated to prevent unintentional setting changes - Resetting to factory settings

Description of controller

7

B.5 Hydraulic variants

Description of controller

Caution

The following illustrations should be viewed only as schematic dia-grams showing the respective hydraulic systems, and do not claim to be complete. The controller does not replace safety devices under any circumstances. Depending on the specifi c application, additional system components and safety components may be mandatory, such as check valves, non-return valves, safety temperature limiters, scalding protec-tors, etc., and must therefore be provided.

1 Solar with storage

2 Solar with pool

3 Solid fuel boiler

4 Storage transfer 5 Raising heat circuit 6 Thermostat

7 ΔT Universal 8 Stop valve 9 Solar with thermostat

10 Solar + Cooling 2x Thermostat11

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Installation

C.1.1

C.1.2

Caution

C.1 Wall installationInstall the controller only in dry areas and under the ambient conditions de-scribed under B.1 “Specifi cations”. Carry out the following steps 1-8.

1. Unscrew cover screw completely

2. Carefully pull upper part of housing from lower part.

3. Set upper part of housing aside, being sure not to touch the electronics when doing so.

4. Hold the lower part of the housing up to the selected position and mark the 3 mounting holes. Make sure that the wall surface is as even as possible so that the housing does not become distorted when it is screwed on.

5. Using a drill and size 6 bit, drill 3 holes at the points marked on the wall and push in the plugs.

6. Insert the upper screw and screw it in slightly.

7. Fit the upper part of the housing and insert the other two screws.

8. Align the housing and tighten the three screws.

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C.2 Electrical connection

Installation

Danger

Before working on the unit, switch off the power supply and secureit against being switched on again! Check for the absence of power!Electrical connections may only be made by a specialist and incompliance with the applicable regulations.Do not use the controller if the housing shows visible damage.

Caution

Low-voltage cables such as temperature sensor cables must be routed separately from mains voltage cables. Feed temperature sensor cables only into the left-hand side of the unit, and mains voltage cables only into the right-hand side.

Caution

The customer must provide an all-pole disconnecting device, e.g. a heating emergency switch.

Caution

The cables being connected to the unit must not be stripped by more than 55mm, and the cable jacket must reach into the housing just to the other side of the strain relief.

With hydraulic variant D1 „Solar+storage“ relays R1 and R2 are switched on simultaneously to allow the connection of another load at R2.Caution

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Installation1.Select necessary program/hydraulics (Fig. B5 resp. D.1 - D.11)

2.Open controller as described under C.1.

3.Strip cables by 55mmmax., insert, fi t the strain relief devices, strip the last 8-9mm of the wires (Fig. C.2.1)

4.Open the terminals using a suitable screwdriver (Fig. C.2.1) and make electri-cal connections on the controller (s. D.1 - D.11)

5.Refi t upper part of housing and fasten with screw.

6.Switch on mains voltage and place con-troller in operation.

C.2.1

Installation

C.3 Installing the temperature sensors

The temperature sensor cables must be routed separately from mains voltage cables, and must not, for example, be routed in the same cable duct!

The controller operates with Pt1000 temperature sensors which are accurate to the degree, thus ensuring optimal control of system functions.

If desired the sensor cables can be extended to a maximum of 30m using a ca-ble with a cross-section of at least 0.75mm². Make sure that there is no contact resistance!Position the sensor precisely in the area to be measured!Only use immersion, pipe-mounted or fl at-mounted sensor suitable for the spe-cifi c area of application with the appropriate permissible temperature range.

Caution

Caution

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D Terminal connection diagramsD.1 Solar with storage tank

D.2 Solar with swimming pool

Low voltage max. 12VAC/DC connection in the left-hand terminal compartment!Terminal: Connection for:S1 (2x) Sensor 1 collektorS2 (2x) Sensor 2 StorageS3 (2x) Sensor 3 (optional)The polarity of the sensors is freelyselectable.Mains voltages 230VAC 50-60Hz Connection in the right-hand terminal com-partment!Terminal: Connection for:R2 not usedN not usedL Mains phase conductor LN Mains neutral conductor NR1 Pump phase conductor LN Pump neutral conductor NThe PE protective conductor must beconnected to the PE metal terminalblock!

Low voltage max. 12VAC/DC connection in the left-hand terminal compartment!Terminal: Connection for:S1 (2x) Sensor 1 collektorS2 (2x) Sensor 2 poolS3 (2x) Sensor 3 (optional)The polarity of the sensors is freelyselectable.Mains voltages 230VAC 50-60Hz Connection in the right-hand terminal com-partment!Terminal: Connection for:R2 not usedN not usedL Mains phase conductor LN Mains neutral conductor NR1 Pump phase conductor LN Pump neutral conductor NThe PE protective conductor must beconnected to the PE metal terminalblock!

Installation

Sensor sidemax. 12V

Mains side230VAC

Danger!Caution!

Sensor sidemax. 12V

Mains side230VAC

Danger!Caution!

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D.3 Solid fuel with storage tank

D.4 Raising of heat circuit

Low voltage max. 12VAC/DC connection in the left-hand terminal compartment!Terminal: Connection for:S1 (2x) Sensor 1 Solid fuel boilerS2 (2x) Sensor 2 StorageS3 (2x) Sensor 3 (optional)The polarity of the sensors is freelyselectable.Mains voltages 230VAC 50-60Hz Connection in the right-hand terminal com-partment!Terminal: Connection for:R2 not usedN not usedL Mains phase conductor LN Mains neutral conductor NR1 Pump phase conductor LN Pump neutral conductor NThe PE protective conductor must beconnected to the PE metal terminalblock!

Low voltage max. 12VAC/DC connection in the left-hand terminal compartment!Terminal: Connection for:S1 (2x) Sensor 1 storageS2 (2x) Sensor 2 backward fl owS3 (2x) Sensor 3 (optional)The polarity of the sensors is freelyselectable.Mains voltages 230VAC 50-60Hz Connection in the right-hand terminal com-partment!Terminal: Connection for:R2 not usedN not usedL Mains phase conductor LN Mains neutral conductor NR1 Pump phase conductor LN Pump neutral conductor NThe PE protective conductor must beconnected to the PE metal terminalblock!

Caution

Actuating direction of valve: R1 on/valve on = direction through the storage tank

Installation

Sensor sidemax. 12V

Mains side230VAC

Danger!Caution!

Sensor sidemax. 12V

Mains side230VAC

Danger!Caution!

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Low voltage max. 12VAC/DC connection in the left-hand terminal compartment!Terminal: Connection for:S1 (2x) Sensor 1 storageS2 (2x) Sensor 2 (optional)S3 (2x) Sensor 3 (optional)The polarity of the sensors is freely selectable.Mains voltages 230VAC 50-60Hz Connection in the right-hand terminal com-partment!Terminal: Connection for:R2 not usedN not usedL Mains phase conductor LN Mains neutral conductor NR1 Pump phase conductor LN Pump neutral conductor NThe PE protective conductor must beconnected to the PE metal terminalblock!

When S2 is installed = S1 is switch on sensor and S2 switch off sensor.Caution

Installation

Low voltage max. 12VAC/DC connection in the left-hand terminal compartment!Terminal: Connection for:S1 (2x) Sensor 1 storageS2 (2x) Sensor 2 storageS3 (2x) Sensor 3 (optional)The polarity of the sensors is freely selectable.Mains voltages 230VAC 50-60Hz Connection in the right-hand terminal com-partment!Terminal: Connection for:R2 not usedN not usedL Mains phase conductor LN Mains neutral conductor NR1 Pump phase conductor LN Pump neutral conductor NThe PE protective conductor must beconnected to the PE metal terminalblock!

Caution

The heat is transferred from storage 1 to storage 2

D.5 Storage transfer

D.6 Thermostat

Sensor sidemax. 12V

Mains side230VAC

Danger!Caution!

Sensor sidemax. 12V

Mains side230VAC

Danger!Caution!

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Low voltage max. 12VAC/DC connection in the left-hand terminal compartment!Terminal: Connection for:S1 (2x) Sensor 1 fl owS2 (2x) Sensor 2 storageS3 (2x) Sensor 3 (optional)The polarity of the sensors is freely selectable.Mains voltages 230VAC 50-60Hz Connection in the right-hand terminal com-partment!Terminal: Connection for:R2 not usedN not usedL Mains phase conductor LN Mains neutral conductor NR1 stop valve phase conductor LN stop valve neutral conductor NThe PE protective conductor must beconnected to the PE metal terminalblock!

Low voltage max. 12VAC/DC connection in the left-hand terminal compartment!Terminal: Connection for:S1 (2x) Sensor 1 controlS2 (2x) Sensor 2 referenceS3 (2x) Sensor 3 (optional)The polarity of the sensors is freely selectable.Mains voltages 230VAC 50-60Hz Connection in the right-hand terminal com-partment!Terminal: Connection for:R2 not usedN not usedL Mains phase conductor LN Mains neutral conductor NR1 Pump phase conductor LN Pump neutral conductor NThe PE protective conductor must beconnected to the PE metal terminalblock!

Brief description of switching function: The ΔT function sensor 1 > sensor 2 switches the pump to relay R.

Installation

D.8 Stop valve

D.7 Universal ΔT controllerSensor sidemax. 12V

Mains side230VAC

Danger!Caution!

Sensor sidemax. 12V

Mains side230VAC

Danger!Caution!

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Low voltage max. 12VAC/DC connection in the left-hand terminal compartment!Terminal: Connection for:S1 (2x) Sensor 1 collectorS2 (2x) Sensor 2 storage lowS3 (2x) Sensor 3 storage topThe polarity of the sensors is freely selectable.

Mains voltages 230VAC 50-60Hz Connection in the right-hand terminal com-partment!Terminal: Connection for:R2 Pump cooler L N Pump cooler NL Mains phase conductor LN Mains neutral conductor NR1 Pump phase conductor LN Pump neutral conductor NThe PE protective conductor must beconnected to the PE metal terminal block!

Installation

Sensor sidemax. 12V

Caution

Mains side230VAC

Low voltage max. 12VAC/DC connection in the left-hand terminal compartment!Terminal: Connection for:S1 (2x) Sensor 1 collektorS2 (2x) Sensor 2 storage lowS3 (2x) Sensor 2 storage topThe polarity of the sensors is freely selectable.

Mains voltages 230VAC 50-60Hz Connection in the right-hand terminal com-partment!Terminal: Connection for:R2 Thermostat LN Thermostat NL Mains phase conductor LN Mains neutral conductor NR1 Pump phase conductor LN Pump neutral conductor NThe PE protective conductor must beconnected to the PE metal terminal block!

Danger

Sensor sidemax. 12VCaution

Mains side230VACDanger

D.9 Solar + Thermostat

D.10 Solar + cooler

Explanation of cooling function see 6.4.1

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Low voltage max. 12VAC/DC connection in the left-hand terminal compartment!Terminal: Connection for:S1 (2x) Sensor 1 S1S2 (2x) Sensor 2 S2S3 (2x) Sensor 3 S3The polarity of the sensors is freely selectable.

Mains voltages 230VAC 50-60Hz Connection in the right-hand terminal com-partment!Terminal: Connection for:R2 Thermostat 2 LN Thermostat 2 NL Mains phase conductor LN Mains neutral conductor NR Thermostat 1 LN Thermostat 1 NThe PE protective conductor must beconnected to the PE metal terminal block!

Installation

Sensor sidemax. 12VCaution

Mains side230VAC

Danger

D.11 2x thermostat

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The display (1), with its extensive text and graphics mode, is almost self-explanatory, allowing easy operation of the controller.

Entries are made using four keys (2+3), which are assigned to different functions depending on the situation. The “esc” key (3) is used to cancel an entry or to exit a menu.

If applicable there will be a request for confi rmation as to whether the changes which have been made should be saved.

The function of each of the other three keys (3) is shown in the display line di-rectly above the keys; the right-hand key generally has a confi rmation and selection function.

Examples of key functions:+/- = enlarge/shrink values▼/▲ = scroll menu down/upyes/no = approve/rejectInfo = additional informationBack = to previous screenok = confi rm selectionConfi rm = confi rm setting

Operation

E.1 Display and Input

Display symbols:

Pump (rotates in operation)

Valve (direction of fl ow black)

Collector

Storage tank

Solid fuel boiler

Swimming pool

Temperature sensor

Thermostat On / Off

Warning / error message

New information available

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E.2 Parametrisation

E.3 Free commissioningIf you decide not to use the commissioning help, you should make thenecessary settings in the following sequence:- Menu 10. Language- Menu 7.2 Time and date- Menu 7.1 Program selection- Menu 5. Settings, all values- Menu 6. Protective functions if adaptations are necessary- Menu 7. Special functions if additional changes are necessaryFinally, menu 4.2 under operating mode “Manual“ should be used to test the switch outputs with the consumers connected, and to check the sensor values for plausibility. Then switch on automatic mode.

vides brief descriptions of each parameter in the display. Pressing the “esc” key takes you back to the previous value so you can look at the selected setting again or adjust it if desired. Pressing the “esc“ more than once takes you back step by step to the selection mode, thus cancelling the commissioning help. Finally, under operating mode menu 4.2 “Manual” should be used to test the switch outputs with the consumers connected, and to check the sensor values for plausibility. Then switch on automatic mode.

The fi rst time the controller is turned on and after the language and time are set, a query appears as to whether you want to parametrise the controller using the commissioning help or not. The commis-sioning help can also be terminated or called up again at any time in the special functions menu. The commissioning help guides you through the necessary basic settings in the correct order, and pro-

Operation

Caution

Observe the explanations for the the individual parameters on the following pages, and check whether further settings are necessaryfor your application.

Caution

Observe the explanations for the the individual parameters on the following pages, and check whether further settings are necessaryfor your application.

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E.4 Menu sequence and menu structureThe graphics or overview mode appears when no key has been pressed for 2 min-utes, or when the main menu is exited by pressing “esc“.

Pressing a key in graphics or overview mode takes you directly to the main menu. The following menu items are then avail-able for selection there:

Current temperature values withexplanations

Function control of the system withoperating hours, etc.

Select graphics mode or overviewmode

Automatic mode, manual mode orswitch unit off

Set parameters needed for normaloperation

Solar and frost protection, recooling,anti-seizing protection

Program selection, sensor calibration, clock, additional sensor, etc.

Against unintentional setting changesat critical points

For diagnosis in the event of anerror

Select the menu language

Operation

1. Measurements

5. Settings

2. Statistics

6. Protections

4. Messwerte

8. Menu lock

10. Language

3. Display mode

7. Special functions

9. Service values

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Caution

The menu “1. Measurement values” serves to display the currently measured temperatures.

The menu is closed by pressing “esc” or selecting “Exit measurements ”.

Selecting “Details” leads to a brief help text explaining the measurement values.

Selecting “Overview” or “esc” exits the Info mode.

If “Error” appears on the display instead of the measurement value,then there may be a defective or incorrect temperature sensor.

If the cables are too long or the sensors are not placed optimally, the result may be small deviations in the measurement values. In this case the display values can be compensated for by making entries on the controller. Follow the instructions under 7.3.What measurement values are displayed depends on the selected pro-gram, the connected sensors and the specifi c device design.

Measurement values

1. Measurement values

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2. Statistics

Caution

The menu “2. Statistics” is used for function control and long-term monitoring of the sys-tem.

The menu is closed by pressing “esc” or select-ing “Exit statistics”.

For analysis of the system data it is essential for the time to be set accurately on the controller. Please note that the clock does not continue to run if the mains voltage is interrupted, and must therefore be reset. Improper operation or an incorrect time may result in data being deleted, recorded incorrectly or overwrit-ten. The manufacturer accepts no liability for the recorded data!

2.1 Operating hoursDisplay of operating hours of the solar pump connected to the controller; various time ranges (day-year) are available.

2.2 Average temperature difference ∆TDisplay of the average temperature difference between the reference sensors of the solar system with the consumer switched on.

2.3 Heat outputDisplay of the heat output of the system. This menu can only be selected, however, when the function “Heat quantity” is activated under 7.7.

2.4 Graphic overviewThis provides a clearly-organised display of the data listed under 2.1 - 2.3 as a bar graph. Various time ranges are available for comparison. The two left-hand keys can be used to page through the data.

2.5 Message logDisplay of the last 10 errors occurring in the system with indication of date and time.

2.6 Reset / clearResetting and deleting the individual analyses. The function “All statistics” clears all analyses but not the error messages.

Statistics

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Menu “3. Display mode” is used to defi ne the controller’s display for normal opera-tion. This display appears whenever two minutes go by without any key being pressed. The main menu appears again when a key is pressed. The menu is closed by pressing “esc” or selecting “Exit display mode”.

3.1 Schematic

In graphics mode, the selected hydraulic systems are depicted with the measured temperatures and operating states of the connected consumers.

3.2 Overview

In overview mode, the measured temperatures and operating states of the connected consum-ers are depicted in text form.

3.3 Alternating

In alternating mode the schematic mode and then the overview mode are active for 5 seconds at a time.

Display mode

3. Display mode

3.4 Eco Mode

Eco mode switches the backlight of the display off after 2 minutes.Default: Off

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4. Operating modesIn menu “4. Operating modes” the con-troller can either be placed in automatic mode, switched off, or placed in a manual operating mode.

The menu is closed by pressing “esc” or selecting “Exit operating modes”.

4.2 Manual

Automatic mode is the normal operating mode of the controller. Only automatic mode provides proper controller function taking into account the current temperatures and the parameters that have been set! After an interruption of the mains voltage the con-troller automatically returns to the last operating mode selected!

4.1 Automatic

Operating modes

The relay and thus the connected consumer are switched on and off by pressing a key, with no regard to the current temperatures and the parameters which have been set. The measured temperatures are also shown to provide an overview and function control.

4.3 Off

When the operating mode “Off” is activated, all controller functions are switched off. This can lead, for example, to overheating on the solar collector or other system components. The measured temperatures continue to be shown shown to provide an overview.

Caution

Danger

When operating mode “Manual” is activated, the current temperatures and the selected parameters are no longer considered. There is a dan-ger of scalding or serious damage to the system. The operating mode “Manual” may only be used by specialists for brief function tests or dur-ing commissioning!

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5. SettingsThe necessary basic settings required for the control function are made in menu “5. Settings”.

5.1 Tmin S1

Enable/start temperature at sensor 1If this value is exceeded at sensor 1 and the other conditions are also met, then the controller switches the pump and/or valve on. If the temperature at sensor 1 drops below this value by 5°C, then the pump and/or valve is switched off again.Setting range: from 0°C to 99°C / default setting: 20°C

5.2 Tmax S2

Switch-off temperature at sensor 2If this value is exceeded at sensor 2 and the other conditions are also met, then the controller switches the pump and/or valve off. If sensor 2 falls below this value again and the other conditions are also met, then the controller switches the pump and/or valve on again.Setting range: from 0°C to 99°C (can be switched off in thermostat systems)Default setting: 60°C (swimming pool: Default: Off)

Caution

This does not under any circum-stances replace the safety facilities to be provided by the customer!

The menu is closed by pressing “esc” or selecting “Exit settings”.

Settings

Danger

Temperature values which are set too high can lead to scalding or dam-age to the system. Scalding protection must be provided by the cus-tomer!

Caution

When using application 3 with solid fuel boiler, at least 60°C shouldbe set. Consider instructions of boiler manufacturer!

Various settings can be made depending on the selection of hydraulic variant. The following pages contain generally valid descriptions for the settings.

Caution

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5.3 ΔT

5.4 TrefReference temperature at sensor 1

Heating = 1. value smaller than the 2. valueIf the temperature drops below Tref On (1. value) at sensor 1 and the thermostat func-tion is enabled, (see 5.6), the relay for additional heating is switched on till the tem-perature reaches Tref Off (2. value).

Cooling = 1. value higher than the 2. valueIf the temperature exceeds Tref On (1. value) at sensor 3 and the thermostat function is enabled (see 5.6), the relay for cooling is switched on till the temperature drops below Tref Off (2. value).

Settings range: Tref On: 10°C - 90°C / Default: 50°CTref Off: 0°C - 99°C / Default: 60°C

Settings

Switching condition: Temperature difference for relay R:If the temperature difference ∆T between the reference sensors is exceeded and the other conditions are also met, then the controller switches the pump/valve on. If the temperature difference between the reference sensors drops to ∆Toff, then the pump/valve is switched off again. Settings range: ΔT 3°C to 20°C / ΔToff 2°C to ΔT minus 1Default: ΔT 10°C / ΔToff 3°C.

Caution

If the set temperature difference is too small, this may result in inef-fective operation or frequent clocking (switch-on and switch-off) of the pump.

The following settings only apply when hydraulic variant 6 (thermostat)is selected.Caution

Caution

When sensor S2 is installed, S1 is used as lead for switch on and S2 as switch off.

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5.6 Thermostat timesSet the desired periods of time when the thermostat should be active. 2 periods can be set per day, settings can also be copied to other days. Outside the set times the thermostat is switched off.Setting range: from 00:00 to 23:59 /default setting: 06:00 to 22:00

Settings

5.5 Tref Th2Reference temperature at sensor1 for thermostat 2

Heating = 1. value smaller than the 2. valueIf the temperature drops below Tref On (1. value) at sensor 2 and the thermostat func-tion is enabled, (see 5.7), the relay for additional heating is switched on till the tem-perature reaches Tref Off (2. value).

Settings range: Tref (on) 10°C to 90°C / Default: 50 °CTref (off) 0°C to 99°C / Default: 60 °C

5.7 Thermostat 2 timesSet the desired periods of time when the thermostat 2 should be active. 2 periods can be set per day, settings can also be copied to other days. Outside the set times the thermostat is switched off.Setting range: from 00:00 to 23:59 /default setting: 06:00 to 22:00

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5.8 Party Funktion

With the party function the storage temperature is heated up once to thereference temperature (TrefS1), disregarding the set thermostat times.

The party mode is enabled by pressing the „esc“-key for 3 seconds in the main menu. While this mode is active, the system heats up to the reference “Tref Off”, unattached to preset thermostat times. The mode is ended once the required temperature is reached.

Settings

5.10 TecoS3Minimum temperature S3 in Energy saving modeIn the hydraulic variants “Solar+thermostat” and “Sol+therm+valve3”, TecoS3 is the minimum temperature at S3 for the thermostat in Energy saving mode. If the tempera-ture drops below this value and the thermostat is enabled (see “thermostat times”), R2 is activated till the temperature reaches TecoS3 + hysteresis (see hysteresis).Settings range: 0°C to 99°C / Default: 20°C

5.9 Energy saving modeEnergy saving mode for the thermostat functionIn energy saving mode the additional heating via R2 is switched on at TecoS3 andheats up to Teco+hysteresis. When energy saving mode is active, but no solar heat isavailable, TsetS3 is used like in normal mode.Settings range: On, Off/ Default: Off

Party function can not be activated via menu, but is switched on by pressing the “esc”-key for 3 seconds.

During Energy saving mode, Party function heats up to TecoS3

Caution

Caution

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5.11 Tmax S3

Switch-off temperature at sensor 3If this value is exceeded at sensor 3 and the other conditions are also met, then the controller switches the relay off. If sensor 3 falls below this value again and the other conditions are also met, then the controller switches the relay on again.Setting range: from 0°C to 99°CDefault setting: 60°C (in systems not using S3: Default Off)

Danger

Temperature values which are set too high can lead to scalding or dam-age to the system. Scalding protection must be provided by the cus-tomer!

Settings

5.12 Hysteresis

Hysteresis of thermostat function via S3Sets the hysteresis for the heating of the storage by thermostat. When Tref S3 at sen-sor 3 is exceeded by the set hysteresis, additional heating at R2 is switched off.In Energy saving mode (see 5.9) additional heating runs till TecoS3 + hysteresis is reached.Settings range: 2°C to 20°C / Default: 10°C

Hysteresis of the cooling function via S3Sets the hysteresis for the cooling function of the storage. If the temperature at S3 drops below Tref S3 by this value, cooling at R2 is switched off. Settings range: 2°C to 20°C / Default: 10°C

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6. Protective functions

Menu “6. Protective functions” can be used to activate and set various protective func-tions.

Caution

The menu is closed by pressing “esc” or select-ing “Exit settings”.

This does not under any circum-stances replace the safety facilities to be provided by the customer!

6.1 Seizing protection

If the Seizing protection is activated, then the controller switches the associated pumo and/or valve on every day at 12:00 or on Sundays at 12:00 for 5 seconds in order to prevent the pump and/or valve from sticking after an extended stationary period.Setting range: daily, weekly, off / default value: Off

6.2 Frost protection (solar only)

A two-stage frost protection function can be activated. In stage 1 the controller switch-es the pump on for 1 minute every hour if the collector temperature drops below the set value “Frost stage 1”. If the collector temperature drops further to the set value “Frost stage 2” the control-ler switches the pump on continuously. If the collector temperature then exceeds the value “Frost stage 2” by 2°C, the pump switches off again.Frost protection setting range: on, off / default setting: offFrost stage 1 setting range: from -25°C to 10°C or off / default setting: 7°CFrost stage 2 setting range: from -25°C to 8°C / default setting: 5°C

Protective functions

Caution

This function causes energy to be lost via the collector! It is normally not acti-vated for solar systems with antifreeze. Observe the operating instructions for the other system components!

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6.4 Collector protection

6.3 System protection

(solar only)Collector protection prevents overheating of the collector. The pump is switched on to transfer heat from the collector to the storage tank.If “CP Ton” is exceeded at the collector sensor, the pump is switched on until the tem-perature reaches “CP Toff” or the temperature “CP Tmax storage” is exceeded in the storage or pool.Collektor protection settings range: on / off / Voreinstellung: offCP Ton settings range: 60°C to 150°C / Default: 110°CCP Toff settings range: 50°C to Ton minus 10°C / Default: 100°CCP Tmax storagesettings range: 0°C to 140°C / Default: 90°C

(solar only) priority protectionSystem protection prevents overheating of system components by automatic shutdown of the solar pump. If “AS Ton” is exceeded at the collector, the pump is switched off. The pump is activated again when the temperature drops below “AS TOff”.Automatic shutdown - settings range: On / Off / Default: onAS Ton - settings range: 60 °C to 150 °C / Default: 120 °CAS Toff - settings range: 50 °C to Ton minus 5 °C / Default: 110 °C

Protective functions

Caution

When system protection is on, the temperature in the idle collector will be very high, thus the pressure in the system will rise and can damage your system.Pay close attention to the instructions of the system manufacturer.

Danger

When collector protection is active, the storage or pool is heated well beyond Tmax S2 (see 5.2) which can result in scalding and system dam-age.

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6.5 Col.- Alarm

(solar only)If this temperature is exceeded at the collector sensor when the solar pump is on a warning or error message is triggered. A warning message is shown in the display.Collector alarm settings range: on / off / Default: offCol. alarm - setting range: 60 °C to 300 °C / Default: 150 °C

Protective functions

Hydraulic variants are selected in menu “7.1 Program selection”

Hydraulic variant cooling:If „CProt Ton“ is exceeded at S1, the pump at R1 is switched on to cool the collector by heating up the storage tank.If the storage tank S2 reaches „CProt Tmax storage“, R1 is switched off.Once the storage tank at S3 exceeds TsetS3, cooling at R2 is switched on till „TsetS3“-hysteresis is reached.

6.4.1 Cooling

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6.7 Anti-Legionella

Caution

Danger

Caution

In hydraulic systems with solar when the recooling function is activated excess energy from the storage tank is fed back into the collector. This only takes place if the temper-ature in the storage tank is higher than the value “Recool Tsetpoint” and the collector is at least 20°C cooler than the storage tank and before the storage tank temperature has dropped below the value “Recool Tsetpoint”.Recooling settings range: on / off / Default: offRecooling Tset settings range: 0°C to 99°C / Default: 70°C

Caution

This function causes energy to be lost via the collector! Therecooling should only be activated in exceptional cases.

6.6 Recooling (solar only)

With the “AL function” activated the TDC1 makes it possible to heat the storage tank up once at certain intervals (“AL interval”) to a higher temperature (“AL Tsetpoint S2”), assuming that the energy source allows this.AL Function settings range: on / off / Default: offAL Tset S2 settings range: 60°C to 99°C / Default: 70°CAL interval settings range: 1 to 28 days/ Default: 7 days

During the anti-Legionella function the storage tank is heated upover the set value “Tmax S2”, which can lead to scalding anddamage to the system.

This anti-Legionella function does not provide complete protection against Legionella, because the controller is dependent on suffi cient energy being fed in, and it is not possible to monitor the temperatures in the entire range of the storage tanks and the connected piping system. To provide complete protection against Legionella bacteria, it must be ensured that the temperature is raised to the necessary temperature, and at the same time there must be water circulation in the storage tank and piping system by means of other additional energy sources and control units.

The anti-Legionella function is switched off at delivery. This function is only relevant for storage tanks where sensor 2 is installed. When-ever heating-up has been carried out with the anti-Legionella function is switched on, an information message with the date is shown in the display.

Protective functions

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7. Special functionsMenu “7. Special functions” is used to set basic items and expanded functions.

The menu is closed by pressing “esc” or selecting “Exit special functions”.

7.1 Program selections The suitable hydraulic variant for the specifi c application is selected and set here (see section D: Hydraulic variants). The associated diagram can be displayed by pressing “info”.Setting range: 1-5 / default value: 1

Caution

7.2 Time and DateThis menu is used to set the current time and date.

Caution

Normally the program selection is made only once during initialcommissioning by the specialist. Incorrect program selection can lead to unpredictable errors.

For analysis of the system data it is essential for the time to be set ac-curately on the controller. Please note that the clock does not continue to run if the mains voltage is interrupted, and must therefore be reset.Caution

7.3 Sensor calibrationDeviations in the temperature values displayed, for example due to cables which are to long or sensors which are not positioned optimally, can be compensated for manually here. The settings can be made for each individual sensor in steps of 0.5°C.Offset S1...S3 per setting range: -10°C...+10°C Default: 0°C

Caution

Settings are only necessary in special cases at the time of initialcommissioning by the specialist. Incorrect measurement valuescan lead to unpredictable errors.

Other than the time all settings may only be made by a specialist.

Special functions

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7.5 Factory settingsAll of the settings that have been made can be reset, thus returning the controller to its delivery state.

Caution

Caution

The entire parametrisation, analyses, etc. of the controller will be lost irrevocably. The controller must then be commissioned once again.

Keep in mind that the system is not changed, adjustments made in this menu are only used to calculate the heat volume and should be based on the actual system. Resulting data is only approximate value for func-tion control!

7.4 CommissioningStarting the commissioning help guides you in the correct order through the basic set-tings necessary for commissioning, and provides brief descriptions of each parameter in the display. Pressing the “esc” key takes you back to the previous value so you can look at the selected setting again or adjust it if desired. Pressing the “esc” more than once takes you back to the selection mode, thus cancelling the commissioning help.

Caution

May only be started by a specialist during commissioning! Observethe explanations for the the individual parameters in these instructions, and check whether further settings are necessary for your application.

7.6 ExpansionsThis menu can only be selected and used if additional options or expansions have been built into the controller. The associated supplementary installation, mounting and operation instructions are then included with the specifi c expansion.

Special functions

7.7 Heat quantity

7.7.1 Heat metering

A simple heat metering function for basic system control can be activated in this menu. Additional settings regarding the glycol, the percentage of gylcol and the fl ow rate of the system are required. A correction value for the heat metering is also possible by adjusting the “Offset ΔT”

Activate or deactivate the heat metering functionSettings range: On/off /default setting: Off

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7.8 Start help function (solar only)With some solar systems, especially with vacuum tube collectors, it may occur that the measurement value acquisition at the collector sensor occurs too slowly or too inac-curately because the sensor is often not at the hottest location. When the start help is activated the following sequence is carried out:If the temperature at the collector sensor increases by the value specifi ed under “Increase” within one minute, then the solar pump is switched on for the set “Purg-ing time” so that the medium to be measured can be moved to the collector sensor. If this still does not result in a normal switch-on condition, then the start help function is subject to a 5-minute lockout time. Start help setting range: on, off/default setting: offPurging time setting range: 2 ... 30 sec./default setting: 5 sec.Increase setting range: 1°C....10°C/default setting: 3°C/min.

Caution

This function should only be activated by a specialist if problemsarise with acquisition of measurement values. In particular followthe instructions from the collector manufacturer.

Special functions

CautionResulting data is only approximate value for function control!

7.7.2 AF typeAdjust the type of glycol that has been used in the system.Settings range: Ethylene/Propylene /default setting: Ethylene

7.7.3 Glycol portionAdjust the percentage of glycol that has been used in the system.Settings range: 0-60% /default setting: 40%

7.7.4 Flow rateAdjust the fl ow rate according to the system.Settings range: 10-5000 l/h /default setting: 500 l/h

7.7.5 ΔT OffsetSince the calculation of the heat metering is based on the temperature ofthe collector and storage where measuring takes place, a possible deviationfrom the fl ow and return temperature can be compensated with this value.Example: Displayed collector temp. 40° C, measured fl ow temp. 39° C,displayed storage temp. 30° C, measured return temp. 31° C means asetting of -20% (Displayed ΔT 10K, actual ΔT 8K => -20% correction value)Settings range: -50% to +50% /default settings: 0%

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Menu “8. Menu lock” can be used to secure the controller against unintentional changing of the set values.

The menu is closed by pressing “esc” or select-ing “Exit menu lock”.

The menus listed below remain completely accessible despite the menu block being activated, and can be used to make adjustments if necessary:

1. Measurement values 2. Analysis 3. Display mode 7.2. Time&date 8. Menu lock 9. Service values

To lock the other menus, select “Menu lock on”.To enable the menus again, select “Menu lock off”.Setting range: on, off/default setting: off

Menu lock

8. Menu lock

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9. Service valuesThe menu “9. Service values” can be used for remote diagnosis by a specialist or the manufacturer in the event of an error, etc.

Caution

Enter the values at the time when the error occurs e.g. in the table.

The menu can be closed at any time by pressing “esc”.

Service values

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Menu “10. Language” can be used to se-lect the language for the menu guidance. This is queried automatically during initial commissioning. The choice of languages may differ, however, depending on the device design. Language selection is not available in every device design!

10. Language

Language

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Z.1 Malfunctions with error messages

Danger

If the controller detects a malfunction, the red light fl ashes and the warning symbol also appears in the display. If the error is no longer present, the warning symbol changes to an info symbol and the red light no longer fl ashes. To obtain more de-tailed information on the error, press the key under the warning or info symbol.

Do not try to deal with this yourself. Consult a specialist in the event of an error!

Malfunctions

Error messages: Notes for the specialist:

Sensor x defective--------------------> Either the sensor, the sensor input at the controller or the connecting cable is/was defective.(Resistance table on page 5)

Collector alarm -----------------------> The collector has fallen/fell below the temperature set under menu 6.3.1.

Night circulation ----------------------> The solar pump is/was in operation between 23:00 and 04:00. (Exception see 6.6)

Restart----------------------------------> The controller was restarted, for example due to a power failure. Check the date&time!

Time&date-----------------------------> Is shown after a mains failure because the time&date have to be checked, and reset if necessary.

Info and warnings

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Danger

Danger

If the mains voltage is switched on and the controller still does not function or display anything, then the internal device fuse may be defective. In that case, open the device as described under 3.1, remove the old fuse and check it. Exchange the defective fuse for a new one, locate the external source of the error (e.g. pump) and exchange it. Then fi rst recommission the controller and check the function of the switch outputs in manual mode as described under 4.2.

Repairs and maintenance may only be performed by a specialist. Before working on the unit, switch off the power supply and secure it against being switched on again! Check for the absence of power!

Only use the supplied spare fuse or a fuse of the same design with the following specifi cations: T2A 250V

Z.2.1Fuse

FuseZ.2 Replacing the fuse

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Caution

In the course of the general annual maintenance of your heating system you should also have the functions of the controller checked by a specialist and have the settings optimised if necessary.

MaintenanceZ.3. Maintenance

Performing maintenance:- Check the date and time (see 7.2)- Assess/check plausibility of analyses (see 2.4)- Check the error memory (see 2.5)- Verify/check plausibility of the current measurement values (see 1.)- Check the switch outputs/consumers in manual mode (see 4.2)- If necessary: Optimise the parameter settings

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Notes

43

Notes

44

Notes:

Hydraulic variant set:

Commissioned on:

Commissioned by:

Final declaration:Although these instructions have been created with the greatest possible care, the possibility of incorrect or incomplete information cannot be excluded. Subject as a basic principle to errors and technical changes.

Manufacturer:SOREL GmbH MikroelektronikJahnstr. 36D - 45549 SprockhövelTel. +49 (0)2339 6024 Fax +49 (0)2339 6025www.sorel.de info@sorel.de

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